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-7+(+7)-(-15)-1= -2.8-6.2+(-3.4)-(-5.6)= ()+ -3.6=0.36.这个数是.(-
-7+(+7)-(-15)-1=
-2.8-6.2+(-3.4)-(-5.6)=
()+ -3.6=0.36.这个数是.
(-14)-(+5)=-9错哪里了.
人气:445 ℃ 时间:2020-02-06 01:41:45
解答
-7+(+7)-(-15)-1=-7+7+15-1=22-8=14-2.8-6.2+(-3.4)-(-5.6)=-2.8-6.2-3.4+5.6=5.6-(2.8+6.2+3.4)=5.6-12.4=-6.8()+ -3.6=0.36.这个数是.0.36-(-3.6)=0.36+3.6=3.96答:这个数是3.96.(-14)-(+...
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